Something to spend time on while waiting for Portal 2 DLC

I'm surprised i came across it so late (contest started in may):
http://forums.thinkingwithportals.com/mapping-contest/full-list-of-contest-map-ratings-t3842.html
Played first ~12 SP maps and they all are great. There are also coop maps which i haven't tried yet so if someone wants to test them together let me know : D